During Plumbers 2020, we voted to just support the latest release of Clang for now. Add a compile time check for this.
We plan to remove workarounds for older versions now, which will break in subtle and not so subtle ways. Suggested-by: Sedat Dilek <sedat.di...@gmail.com> Suggested-by: Nathan Chancellor <natechancel...@gmail.com> Suggested-by: Kees Cook <keesc...@chromium.org> Signed-off-by: Nick Desaulniers <ndesaulni...@google.com> Tested-by: Sedat Dilek <sedat.di...@gmail.com> Reviewed-by: Kees Cook <keesc...@chromium.org> Reviewed-by: Miguel Ojeda <miguel.ojeda.sando...@gmail.com> Reviewed-by: Sedat Dilek <sedat.di...@gmail.com> Acked-by: Marco Elver <el...@google.com> Acked-by: Nathan Chancellor <natechancel...@gmail.com> Acked-by: Sedat Dilek <sedat.di...@gmail.com> Link: https://github.com/ClangBuiltLinux/linux/issues/9 Link: https://github.com/ClangBuiltLinux/linux/issues/941 --- include/linux/compiler-clang.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h index cee0c728d39a..230604e7f057 100644 --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -3,6 +3,14 @@ #error "Please don't include <linux/compiler-clang.h> directly, include <linux/compiler.h> instead." #endif +#define CLANG_VERSION (__clang_major__ * 10000 \ + + __clang_minor__ * 100 \ + + __clang_patchlevel__) + +#if CLANG_VERSION < 100001 +# error Sorry, your version of Clang is too old - please use 10.0.1 or newer. +#endif + /* Compiler specific definitions for Clang compiler */ /* same as gcc, this was present in clang-2.6 so we can assume it works -- 2.28.0.402.g5ffc5be6b7-goog
